a: 2/3=1-1/3

5/6=1-1/6

3/4=1-1/4

1/3>1/4>1/6

=>-1/3<-1/4<-1/6

=>2/3<3/4<5/6

b: 7/15=21/45

5/3=75/45

24/45=24/45

mà 21<24<75

nên 7/15<24/45<5/3

a)15/8:9/8/7/8;3/8

b)3/5;7/15;4/15;8/45

c)9/4;47/10;4/5;3/8

a) \(\frac{3}{8},\frac{15}{8},\frac{9}{8},\frac{7}{8}\)

Từ lớn -> bé:

=>\(\frac{15}{8},\frac{9}{8},\frac{7}{8},\frac{3}{8}\)

b) \(\frac{4}{15},\frac{3}{5},\frac{8}{45},\frac{7}{15}=\frac{12}{45},\frac{27}{45},\frac{8}{45},\frac{21}{45}\)

Từ lớn -> bé:

=> \(\frac{3}{5},\frac{7}{15},\frac{4}{15},\frac{8}{45}\)

c) \(\frac{3}{8},\frac{4}{5},\frac{47}{40},\frac{9}{4}=\frac{15}{40},\frac{32}{40},\frac{47}{40},\frac{90}{40}\)

Từ lớn -> bé:

=>\(\frac{9}{4},\frac{47}{40},\frac{4}{5},\frac{3}{8}\)

\(\frac{4}{15};\frac{3}{5};\frac{8}{45};\frac{7}{15}\)

Sắp xếp: \(\frac{3}{5};\frac{7}{15};\frac{4}{15};\frac{8}{45}\)

\(\frac{3}{8};\frac{4}{5};\frac{47}{40};\frac{9}{4}\)

Sáp xếp: \(\frac{9}{4};\frac{47}{40};\frac{4}{5};\frac{3}{8}\)

15/6; 2004/1999; 1;12/15;3/5

\(\frac{3}{4}< \frac{3}{2}< \frac{5}{3}< \frac{5}{2}< \frac{6}{1}< \frac{29}{4}\)

thanks

\(\dfrac{2}{3}< \dfrac{4}{5}< \dfrac{5}{6}< \dfrac{9}{10}< \dfrac{14}{15}\)

Ta có:
\(\dfrac{6}{5}=\dfrac{6\times168}{5\times168}=\dfrac{1008}{840}\)     ;    \(\dfrac{3}{4}=\dfrac{3\times210}{4\times210}=\dfrac{630}{840}\)     ;     \(\dfrac{9}{8}=\dfrac{9\times105}{8\times105}=\dfrac{945}{840}\) 

\(\dfrac{1}{7}=\dfrac{1\times120}{7\times120}=\dfrac{120}{840}\)     ;    \(\dfrac{2}{3}=\dfrac{2\times280}{3\times280}=\dfrac{560}{840}\)

⇒ \(\dfrac{120}{840}< \dfrac{560}{840}< \dfrac{630}{840}< \dfrac{945}{840}< \dfrac{1008}{840}\) ⇒ \(\dfrac{1}{7}< \dfrac{2}{3}< \)\(\dfrac{3}{4}< \dfrac{9}{8}< \dfrac{6}{5}\)
 

2/3 , 3/4 , 6/5 , 9/8 , 1/7 . 

2/3 , 3/4 , 6/5 , 9/8 , 1/7 .

Giúp mik với, mik đang cần gấp 

a) A

b) C

\(\frac{3}{2};\frac{4}{3};\frac{5}{4};\frac{6}{5};\frac{7}{6};\frac{8}{7};\frac{9}{8}\)

\(1\frac{1}{2};1\frac{1}{3};1\frac{1}{4};1\frac{1}{5};1\frac{1}{6};1\frac{1}{7};1\frac{1}{8}\)\(\frac{3}{2};\frac{4}{3};\frac{5}{4};\frac{6}{5};\frac{7}{6};\frac{8}{7};\frac{9}{8}\)

Vì \(\frac{1}{2}>\frac{1}{3}>\frac{1}{4}>\frac{1}{5}>\frac{1}{6}>\frac{1}{7}>\frac{1}{8}\)

=> \(1\frac{1}{2}>1\frac{1}{3}>1\frac{1}{4}>1\frac{1}{5}>1\frac{1}{6}>1\frac{1}{7}>1\frac{1}{8}\)

Hay    \(\frac{3}{2}>\frac{4}{3}>\frac{5}{4}>\frac{6}{5}>\frac{7}{6}>\frac{8}{7}>\frac{9}{8}\)

\(\frac{3}{2};\frac{4}{3};\frac{5}{4};\frac{6}{5};\frac{7}{6};\frac{8}{7};\frac{9}{8}\)

\(\frac{3}{2};\frac{4}{3};\frac{5}{4};\frac{6}{5};\frac{7}{6};\frac{8}{7};\frac{9}{8}\)\(\frac{3}{2};\frac{4}{3};\frac{5}{4};\frac{6}{5};\frac{7}{6};\frac{8}{7};\frac{9}{8}\)

9/8,8/7,7/6,6/5,5/4,4/2,3/2

Thực ra đề bài đã sắp xếp theo thứ tự từ bé đến lớn rồi đó bạn 😅

Chúc bạn học tốt.

😁😁😁

`MSC:12`

`1/3 = (1xx4)/(3xx4)= 4/12`

`3/2=(3xx6)/(2xx6)=18/12`

`5/6=(5xx2)/(6xx2)=10/12`

`3/4=(3xx3)/(4xx3)=9/12`

`-> 4/12; 9/12; 10/12;18/12`

`->1/3; 3/4;5/6;3/2`

có `1/3=4/12`

`3/2=18/12`

`5/6=10/12`

`3/4=9/12`

vì `4<9<10<18`

`=>4/12<9/12<10/12<18/12`

`=>1/3<3/4<5/6<3/2`

`=>` sắp xếp: `1/3;3/4;5/6;3/2`